Resonant Nucleation

Details Resonant Nucleation Resonant Nucleation

2004-09-15

arxiv.org/abs/hep-ph/0409179v2

Phys.Rev.Lett.94:151601,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 5 figures, uses revtex4. Final version accepted for publication in Physical Review Letters. Text and figures have bee

Scientific paper

10.1103/PhysRevLett.94.151601

We investigate the role played by fast quenching on the decay of metastable (or false vacuum) states. Instead of the exponentially-slow decay rate per unit volume, $\Gamma_{\rm HN} \sim \exp[-E_b/k_BT]$ ($E_b$ is the free energy of the critical bubble), predicted by Homogeneous Nucleation theory, we show that under fast enough quenching the decay rate is a power law $\Gamma_{\rm RN} \sim [E_b/k_BT]^{-B}$, where $B$ is weakly sensitive to the temperature. For a range of parameters, large-amplitude oscillations about the metastable state trigger the resonant emergence of coherent subcritical configurations. Decay mechanisms for different $E_b$ are proposed and illustrated in a (2+1)-dimensional scalar field model.

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